On Fri, 15 May 2015 at 13:47:59 +0100, Ben Hutchings wrote: > On Fri, 2015-05-15 at 05:24 +0200, Guilhem Moulin wrote: >> On Fri, 15 May 2015 at 03:57:35 +0100, Ben Hutchings wrote: >>> GRUB knows how to do this properly, so you're just making things >>> difficult for yourself. >> >> Since there is always a risk of bricking the board when flashing the >> BIOS chip, I don't want to add a hook add flash it whenever I upgrade >> the kernel. > [...] > > Why would you need to flash the whole chip? Isn't the configuration in > its own flash partition?
Not that I know of. At the moment the format doesn't allow “support
multiple CBFSes per firmware image” [0]. My current way of upgrading
the grub.cf is to replace the grub.cfg in the ROM, then flash the whole
chip [1]:
cbfstool libreboot.rom remove -n grub.cfg
cbfstool libreboot.rom add -t raw -n grub.cfg -f grub.cfg
flashrom -p internal -w libreboot.rom
And using flashrom on the go makes me sweaty ;-) As the coreboot wiki
says: “Disadvantages: more risky if you have no way to recover ”.
--
Guilhem.
[0] http://www.coreboot.org/CBFS#FMAP
[1] http://www.coreboot.org/GRUB2#combining_with_coreboot
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